FontForge 20161012 is vulnerable to a stack-based buffer overflow in addnibble (parsettf.c) resulting in DoS or code execution via a crafted otf file.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - FontForge 20161012 is vulnerable to a stack-based buffer overflow in addnibble (parsettf.c) resulting in     DoS or code execution via a crafted otf file. (CVE-2017-11571)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 14.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3409-1 advisory.

    It was discovered that FontForge was vulnerable to a heap-based buffer over-read. A remote attacker could     use a crafted file to DoS or execute arbitrary code. (CVE-2017-11568, CVE-2017-11569, CVE-2017-11572)

    It was discovered that FontForge was vulnerable to a stack-based buffer overflow. A remote attacker could     use a crafted file to DoS or execute arbitrary code. (CVE-2017-11571)

    It was discovered that FontForge was vulnerable to a heap-based buffer overflow. A remote attacker could     use a crafted file to DoS or execute arbitrary code. (CVE-2017-11574)

    It was discovered that FontForge was vulnerable to a buffer over-read. A remote attacker could use a     crafted file to DoS or execute arbitrary code. (CVE-2017-11575, CVE-2017-11577)

    It was discovered that FontForge wasn't correctly checking the sign of a vector size. A remote attacker     could use a crafted file to DoS. (CVE-2017-11576)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

It was discovered that FontForge, a font editor, did not correctly validate its input. An attacker could use this flaw by tricking a user into opening a maliciously crafted OpenType font file, thus causing a denial-of-service via application crash, or execution of arbitrary code.

FontForge is vulnerable to heap-based buffer over-read in several functions, resulting in DoS or code execution via a crafted otf file :

For Debian 7 'Wheezy', these problems have been fixed in version 0.0.20120101+git-2+deb7u1.

We recommend that you upgrade your fontforge packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
220213	Linux Distros Unpatched Vulnerability : CVE-2017-11571	Nessus	Misc.	high
102957	Ubuntu 14.04 LTS : FontForge vulnerabilities (USN-3409-1)	Nessus	Ubuntu Local Security Checks	high
102825	Debian DSA-3958-1 : fontforge - security update	Nessus	Debian Local Security Checks	high
102785	Debian DLA-1065-1 : fontforge security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2017-11571

high

Tenable Plugins

high

high

high

high